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Progress toward new chemotherapy agents
Date:3/26/2012

Advances in chemotherapy have dramatically improved the outlook for many cancer patients, but the side effects of this treatment are daunting. A new generation of chemotherapy drugs with fewer side effects is the goal of Edward J. Merino, assistant professor of chemistry at the University of Cincinnati.

Merino will discuss his efforts toward designing these new anticancer agents Tuesday, March 27, at The Chemistry of Life: Spring National Meeting and Exposition of the American Chemical Society in San Diego.

At that meeting, Merino will show a new anticancer agent that targets cancerous cells by zeroing-in on the "pollutants" produced by the characteristic metabolism within tumors. This agent, which Merino calls a "ROS-caged agent," is activated by oxidative stress, a signature of cancerous activity.

"Cancerous cells use energy differently from other cells," Merino said. "Like an automobile engine with the gas pedal pushed to the floor, they give off a unique sort of pollution because they are not as efficient in using energy. Cancer cells don't use metabolism all the way through. We have found key enzymes that contribute to this characteristic signature."

This signature results from the build-up of reactive oxygen species, known as ROS. This environment creates a chemical target that Merino and his team can target with chemical systems. Merino describes his findings as a preliminary description of the factors that can make drug delivery much more selective.

"We are looking for chemicals that operate like heat-seeking missiles that attack only cancerous cells," Merino said. "If we are successful, we can create drugs with far fewer side effects."

The side effects associated with chemotherapy hair loss and weight loss are generated from the mechanism used to target today's family of drugs. Because cancerous cells reproduce rapidly, chemotherapy targets rapidly reproducing cells. The problem, Merino said
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Contact: Greg Hand
greg.hand@uc.edu
513-556-1822
University of Cincinnati
Source:Eurekalert  

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